Improved shackle-jack



JOHN WH-ITLCCK, or. BIRMINGHAM, CONNECTICUT.

Leners Patent No. 78,848, am@ June 9,1868.'v

n IMPRCVED sACKLB-JACK.

@te Sdgehnle feierten tu in their -'tters nimt mit meting( part nf tige samt'.

Beit known that I', JOHN WHITLOCK; of Birmingham, county of New Haven, and State of Connecticut, have invented ancwand useful implement, which I calla Shaiclrle-Jack, and it is intended for compressing the India rubber or other elastic material used in carriages or other yehicles for the purpose of preventing noise and wear in the shackles'which connect the shafts or thills orpoles to the forward axle. In the accompanying drawings` A l Figure l represents' a section of a carriage-axle with the shackle-jack attached, wherein A A is a. section of the axle.; B,'the two Vends of the shackle; B', shackle-bolt; C, the eye of shackle; D D', piece of T nda rubber ormother elastic material; E E, two clip-nuts for holding the shackle on the axle.

The parts which I claim as new are, 11H', frame of shackle-jack,- with its forked end turned up behind the'axle, as at K, iig. 1, and its opposite end tapered to receive the screw G'.- It also has a slot for receiving the slide F', which has a tenon sliding in it,and is retained in its place by the ca'p I and screw J.'

The forward end of the slide F' is hollowed at F to receive the cylindrical part ofthe shackle-eye C, and carrying it straight forward against-the rubber D D', in order to compress it by the screwG suciently to allow thebolt B to enter the two parts of the shackle B and C and fastening them together.4 I

Figure 2 represents the shackle-jack when detachedfrcm the shackle, and contains all of the parts which ,I claim to be new.

Having thus described my invention, what I cla-irntherein as new, and desire-to secure by Letters Patent, is'- The combination of the hook-frame H H wthth'e slide F andthe screw G, or their equivalents, for the purposes above described.

JOHN WHITLOCK.

Witnesses:

JOSEPH ToMLrNsoN, GEC. G. Amis. 

